fix: application submitted page not being shown

[brarsanmol]

Changelog

• Forgotten account confirmation check on the findSelf function in the hacker middleware allowed constant 409 requests.
• IMPORTANT: This issue has a ripple effect in the sponsor and volunteer middleware from what i understand as the code is the same in the findSelf functions in both classes.
  • I would recommend patching both or resolving the e-mail billing issue before the sponsor and volunteer onboarding.

Type of Change:

• Bug fix (non-breaking change which fixes an issue)

Testing Methods?

• The behaviour from the bug has been resolved and now the page shows.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• Listed change(s) in the Changelog
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I have made corresponding changes to the documentation
• Any dependent changes have been merged and published in downstream modules